Question

How do you evaluate `cos(tan^-1(sqrt3/3 + sin^-1 (1/2)))`?

Answer 1

`0.672355`, nearly

Explanation:

The given expression is

`cos(tan^(-1)(1/sqrt3+pi/6))`

`=cos(tan^(-1)(tan^(-1)(1.10095))`, nearly

`=cos(47.751^o)`, nearly

`=0.672355`, nearly.